Filling-thread-tensioning mechanism



May 28, 1929. w. A. TEBO FILLING THREAD TENSIONING MECHANISM 2 Sheets-Sheet 1 Filed Sept. 1],, 1928 '1 I ATTORNEY Patented May 28,1929

N-i D AT wILLfAM. At'TE' ofor AnTnonY; mom-Items, Ass GNonTo n'nArERjconPoRA- TION, F HOBEDALE, MASSACHUSETTS, A conronarronon MAINE;

I 'FILLING-THREAD-TENSION1NG' MEGiI-IANEM,

Application f ld September 11, 1928. '-S eria1fNo.305,2 4-0:.' 'j '2 V Thisinvention relates-to fillingthread tensioning mechanisms for looms and is more particularly directed to such tensioning' me'chanism's adapted'for employment on fill- 5fing replenishing looms.

"Filling replenishing looms asnow ordix narily constructed are provided with re- .plenishlng mechanism which, upon substan-l tial exhaustion of filling in the shuttle,- is

. set in operation to replenish the filling in the shuttle. The filled carriers or bobbins are ordinarily containedin a hopper and t e fill,- ing end leading fromthefilling carriers or bobbins is secured-to a fixed part so that when I the shuttle is picked following replenishment, the fillingv will be :laid in the shed and the shuttle become partially threaded. In .weavingwith' certain kinds or characters of i filling, especially of the'kinkytype, it is dethread on the first pick of. the shuttle, that sirable that tension be placed upon the filling it may not produce a defect in the resulting cloth. 7 y y g An important feature of the present invention consists in a thread tensioning mecha .nism outside of thershuttle which may'act upon the thread between the boxed shuttle and the warp threads atone side of the loom to insure that the first pick of filling laid in the shed shall be straight and under tension. In accordance with the present invention, the thread tensioninganeans comprises a thread clamp which, on call TOT-:I'GPTGIllSh mentiof filling, isbrought into action to '35 clamp the-thread at thenon re'plenishing side ofjthe loombetwee'nthe boxed shuttle and the warp threadg and athread deflector between the'thread clamp and the warp threads for forminga bend or bight in the threa-d as .the lay moves frontwardly following replenishment.- 1 I x More specifically stated, the present invention provides a clamp between the members 1 of which the thread extending from the shut-' tle into the shed is held, to thereby prevent the bending or bight-forming device from withdrawingthe thread from the shuttle and confining its threadten'sioningeffort upon the thread leading to the opposite cloth sel-' vage; The thread deflector-is provided with a loop thl'oughwvhicli the shuttle passes as it enters the non-replenishing box, and the front portions of the loop; have inc-lined legsover the lay;v

vSince the main. purpose of the'invention is.

{and'nnder which thread a A bight' or bend by the frontwardmovement of to insure'th'at the first and a few subsequent picks of the thread may be laid in theshed under tension following repleni'shmenn. means are provlded for. normally maintains.

ing the thread clamp' andithread deflector in inoperative position and on 'call for :replenishment ofy-filling to movethe thread clamp 'andth'read deflector-Y to operative position,"

willbestbe madeclearfrom' the following description and the accompanying drawings of one'goodfoitinthreof,

'I'n-thedrawmgsir; I i Fig. 1' 1s a perspective View of sufficient 'vided with the. present inventionto make i and after actingthedesired number of times I portions of-a fillingreplenishing loom proclear the construction and operation-thereof;

Fig. 2 is a cross-section through the; lay when the latter is in its frontw a'rd position and the filling thread has been clamped and bent about the legs of the thread deflector; j Fig; 3 is a detail in; perspective-showing 1 I therelative position Oflthe filling thread and the legs of the thread 'defiector when the threadis in tensioned position vl I ig. ft is a side elevationfiof a trip device for, normally maintalning the thread clamp and thread deflector 1n, inoperative position and freeing them for movement to o erative position on call for replenishment o filling,

some of the parts being shown in section; 'I

Fig. 5 is a detail showing part of the trip device. Q V -The present invention will be described in connection with a filling replenishing loom having a feelermechanism at. the non-replenish ng side and a replenishlng mechanism or transferrer at the replenishing sided-of the of the present invention and as such'details necessary loom. The details of thereplenishing-mecha nism and transferrer form no essential part \VllGlTlil itwill be' note'd that the thread 6 during normal'w'ea ving and't'o release them form'ovement to operative position: only on i call for replenishmentof fillingas dictated by the feeler. To this end thethread clamp maintain them in an inoperativefrontward r 7 i 1 I acts normallyto hold them in operativerela-V has been moved frontwardly 1 by the' reed 4 pastthe crossing point 33 of the legs 31 and 32 of the thread deflector, with the result that the thread crwill" be bent under the log-32,

as at 40, andover the leg 31,- as at 41, to thereby take up any slackflexistingin, the fillingrthread extending to the opposite selva'ge. cInasmuch,however, asthe slack in the fillingthread a may vary from time to time, the legs '31 and 32 of thethrflead deflector are made resilient to acconnnodate for variation inf the amount of fillingithreadv. i x I Since the functions of the thread clamp and thread deflector-are to'be exercised only periodically and preferably on the first and two or three succeeding, picks of the shuttle following replenishment, inea'n's'are provid ed for normally hold ng the thread clamp and thread deflector ln an inoperative, position 29an'd the thread deflector are under the con trol of a trip device which normally acts to position. i

"The trip device'i's mounted upon an arm 4-2 which supports a boxy-like casing 4:? below the 'breastbeam, as more'rlearly illustrated inFigs. 1 and 2, andthe details thereof are best illustrated by Figs. l-and 5.

Pivotally mounted in the casing 43" at 44: is'gthe trip arm 45, the upper endportion of which is rounded, as at 46, and pivotally connected to thetrip arm 45 zit 4L7 is the front end portion 48 of the arm carrying the a thread deflector. 'The thread clamp carrying arm 28 is provided with a slotted portion 49 which engage's'a stud or screw,50 extending.

from the opposite side of the trip arm 45, and

a spring 51ha'ving one end'conne'cted to a pin 52 extending from the front end portion of the arm 28, and its opposite end connected to a pin 53' mounted u'pon a-bracket 54; ad-

justably secured to the casing 43, serves with a'normal tendency to mov'e'the, clamp carry the front of the loom.

' ring arm 28"rear'wardly. Eachof'the arms ,28 and 35 maybe conveniently passed throughguide sleeves 55 and 56 supported upon the bracket54'or other convenient fixed partfthereby serving to further guide the clamp carrying and thread deflector carrying arms in their movement towards and from As indicated in Fig. 4:,the trip arm has pivoted'thereto at 5 7Zthe lever 58, the rear end portion of which is provided with a cam devicelor inclined me1nb'er 59p, and acting upon the lever 58 is,a spring 60fo'ne 'end of which is connected to the front end portion '51 of the lever 58 and the other end at 62 to the casing 43, the tendenc'yof the spring acting to hold the inclinedend portion 59 lifted and also tending. by reasonof :itSIjillCliIlBd stress to move the triparm 45ffrontwardlyf into'the' position indicated in Figf 1;

Rotat'ably mounted upon the casing 43 :at

63 isthe ratchet and stop member orwheel 6d which is normally "under the influenceot a spring 65 tendingtoturn the ratchet member in a clockwise direction,viewing Fig. 4-, andextending from the ratchet member is a stop 66. The ratchetmember is. provided withya' series of teeth 67 and 68, the former of which are adapted tobe engaged by'apawl 69 piv-' oftally mounted at 770 uponthe lever 58 and having at its upper end a projection 71 adapt-Q ed to be engaged by the trip arm 45 when-the latter is moved rearwar'dly, "as willlpresently v from the-teeth 67 the spring65 ;\vill;turn.the; ratchehwheelin a clockwise direction. t I '2 1 Pivotallyi associated withfithe trip farm is a holding pawlfl72'tl iebend of. which *is adapted to engage the teeth 68v 'of-the ratchet wheel and hold it froin rotativemovement clockw ise,-viewing Fig.4, and a spring .73

extends between 'the;pawls '69 andxl2i and tion'with-their respectiveratchetiteetln c i i The lower 'portionof the tri'parni 45 has the arm 74 extendingtherefrom alongside of the ratchet 72, which latter isprovided with a disengaging projection 75 underlyingthe arm 74t, the result being thatiwhenttheatrip 1,

arm 4t5 is movedfrearwardly, as indicated in F 1g.&, the arm 7 4: Wlll disengage the hold ng pawl 72 from the. ratchet teeth '68 and permit the ratch-etwheel Getter rotate under-theac;

tion of the spring 65 until thes'top 66 'e'ngages the end of the holding "pawlr72 to thereby limit the rotative moveme'nt ofthe' I ratchet wheelin'a clockwise direction,

moved to its backward position, as indije- Secured to the ratchet wheelti t and rotat: able therewith is the camor arnrstop 76 llELVr e cated in Fig hand the holding pawl-T2'ha's been tripped,-the circular portioirofthe. cam u 76 will be brought'into position above. the v arm 74'to thereby holdthe arm 74 and-peri force the trip arm A5 in its rearward position,

but when the actuating pawl- .69 operates 2 upon its ratchet teeth 67-to turn the-ratchetwheel in a contraclockwise direction,-Fig, the slabbed-otl flportion 77 ofthe cain76 will I finallyhe stepped alongmby.;tl1e. ratchet 69 until it comes above the end ofuthe-ar n'it,

whereupon the spring 60 will act to'move the trip arm 45 frontwardly into its inoperative position. #Asbefore noted, the holding'pawl 72 act's upon the teeth-68 to hold the ratchet wheel from rotation in 'a clockwise direction,

Fig: 4 when the trip arm 45 is; in its: front position and the'slabbed ofi portion- 77 oi the portionof thecam rearward position.

cam 76'has permitted such movement of the trip arm. 1 indicated T his position of the trip arm A5,

the-holding pawl 72 duringnormal weaving operations. J

Mounted upon the transverse or rockshaitt 5' is an arm 7 8 having a: roller 79 adapted to ride up the inclined surface of the triparm 45'when the transverse or rock-shaft is turned responsive to a call for replenishment of fill-- ing and thereby causejthe trip arm-45 to be swung about its pivotal mounting 44 into its rearward position, asindi'cated in Fig. v4t, and

since the projection 71 of the actuating-pawl 69 and the'projection 7 5 of the holding. pawl V72'a're thenenga'ged by'the trip arm andits projection '74frespectively, the ratchet wheel G t-Will turn clockwise to bring the circular V g 7 Gabo've the projecting arm'74,'thereby holding the trip arm in its trip arm 45 by'theroller 79 is slightly greater 1 than'the rearwardposition of the'trip arm so that when the roller79 releases the trip arm'it will'sWing slightly about its pivotal -mounting4t 'underthe action ofthe spring 60. tofthereby permitthe actuating pawl 69 toengage its cooperating teeth 67 of the ratchet wheel, and .the holding pawl '72 to engage its ratchet teeth 68. It, now, the lever 58 be rocked upon its pivotal support 57, the

actuatingpawl 69 will act upon its ratchet teeth 67 to turn the ratchet wheel in a cona traclockwise;direction, while the holding pawl 7 2 will hold the ratchet wheel into the p osition'so moved; I U e jM'ounted upon the lay is a downwardly extending arm 80, Fig. 1, from the lower end of which extends anadjustable slide 81 having a roller- 82, which on each forward movement of the lay rides up the incline 59 of the lever 58 a-ndrocks thelever about its pivotal support 57, with the result that the ratchet wheel will be turned step-by-step on each" frontward movement of the lay until the slabbed-ofii' portion 77 of thecam 76 permits the trip arm 45 to be moved frontwardlyun-v der the" stress of the spring 60, and since the g tlpractical it will'be notedthatthe invention provides a I lever 58 pivoted to the trip arm 45 it will .be withdrawn frontwardlyout of further on- 1 gagem'ent with the trip actuator or roller 82 mounted on the lay and-the parts, including thefclamping member 29 and the thread de 'flector will be moved frontwardly to an in- I operative posltion and therehelduntil an-' other call for replenishment of filling.

From' the construction described as one form of the present invention thread clamp to clamp the filling thread be tween 'theend of the boxed shuttle and the V warp threads on beat-upmovement of the lay following replenishment, and asthe lay beats upfand'after the thread has been clamped, the lay will move the filling thread further in Fig. 1, .will'be maintained by The movement of the frontward'to cause itjto be deflected or bent V by the inclined-leg portionsof thethread defiector at a point between the thread clamp and the warp threads;

during normal Weaving operation to maintain the threadclamp and. thread deflectorin an Itjwill also be seed]. 3 that the invention v. r v dl' means acting inoperative position, and that upon call for v replenishment :of filling as dictated by the feeler the thread clamp'and thread deflector will be moved tog-their rearward operative position and maintained in such" positionafor a number of picks depending'uponthe number of teeth provided/onthe ratchetwheelfi or as directed. by the trip device;v .What is claimed: is;

. 1, In a loom, -the c'ombination'of thel lay device constructed and arranged to act upon the filling threadbetween the boxed shuttle and cloth selvage and comprising thread clamping-members between which the shuttle and shuttle boxes,a fillingthread tensioning passes for clamping the filling thread a's the lay beats up," and a thread deflector between the clamp and cloth selvage having relatively inclined members between whichthe filling is I j V laidibv the shuttle :for producing a bend or bight in the thread after it hasbeen clamped and asit is moved 'frontwardly onf beat up movement of the lay. a i

2. In a loom, thecombina tion of the lay and shuttle boxes, afillingthread,tensioning device between the shuttle box andthe clot-h selvage, comprising a thread c lampwhaving "clamping members between Whichthe shut-v tle passes to clamp the, thread adjacent the inner end of theshuttle box as the lay beats up, and a thread deflector between the'clamp andx-clothselv-age having inclined intersect- I ing: legs which engage the thread as it is moved frontwardly by the lay for producing V a bend or bightin the thread extending from i the clamp to'the remote cloth; selvage.

l 3. In a-loom,'-the comblnation of the lay and shuttle boxes, a filling thread tensioning device between the shuttle boxand the edge or; the cloth, including a clamp to clamp the thread adjacent the; inner endof theshuttle box, and a thread'defiec-tor comprising crossleg portions over and under which the bent at a point between the devicefbetween the shuttle box and the edge box, and a thread deflector having a loop through Which the shuttle passes and leg portions over and under which the thread is bent of the cloth, including a clamp to clamp the e thread adjacent the inner end oftheshuttle at a; point 1 between the clamp and warp threads.

' 5. In a loom, the combination of the lay I Q and shuttle boxes, a filling thread: tensioning device between the shuttle box and edge of the cloth includinga clamp to clamp the thread adiacent inner f nd of the shuttle box, and a thread deflector having a loop through which the shuttle passes and .it'rontwardly extending legiportions over andiiih Y der Which the thread, is-bent 'ata point be tween the clampand warp threads as the lay moves frontwardly, l i 6,,In. a loom, the combination ofthe lay s and shuttle boxes, a filling thread tensioning ,clevice between the shuttle box and :the edge of the cloth, including a clamp to clamp the thread adjacent the innerv end of the shuttle box, and a thread deflector having upper and lower portions forming a loopthrough which the shuttle passesand frontwardly ex-v tending. yielding 'leg'poi'tions about which the filling thread is, bentat a point between the clamp and Warpthreads as the lay moves ,20 V

frontwardly.

7 .In a loom, thecombination of the andsliuttle boxes, a thread clamping plate carried by the lay, a clamping member front-' ward of the lay tocooperate with the clamping plate to clamp the fillingthread between the innerend of the boxed shuttle and' warp I threads as the lay movesfrontwardly, and a thread deflector having a loop through which the shuttle passes andjrontwardly extending'leg portions between thethread clamp and warp threads about which the filling thread is bent asthe lay moves frontwardly.

8. In a loom, the'combination of the lay and shuttle boxes, athread clamping plate carried by the lay, a clamping member front- .Ward of the lay to cooperate with the clamping plate to clamp the filling thread between the inner end of the boxed shuttle and warp threads as the lay moves frontwardly, and a thread deflector having a loop through which the shuttle passes and frontwardly extending and crossing leg portions between the thread clamp and Warp threads about whichthe filling thread is bent as the lay moves frontwardly. V 1

9. In a loom, the combination of the lay and shuttle boxes, a filling thread tensioning devicebetween the boxed shuttle and Warp threads, comprising cooperating clamping members one on the lay and the other front- Ward thereof adjacent the inner end of the boxed shuttle, and a thread deflector having inclined crossing leg portionsbetween which the thread is laid by the shuttle and about which it is caused to be bent asthe lay moves frontwardly;

10. I11 a loom, the combination of the lay "and shuttle boxes, a filling thread tension ing device between the boxed shuttle and warp threads, comprising cooperating clamp ing members one on the'lay 'and the other frontward thereof adjacent the inner-end of the boxed shuttle, and a thread deflector having inclined crossing leg portions between which the'thread is laid by the shuttle and about which it is], caused to, be bent as the lay moves front'wardly,thetrOssingofthe inclined leg portions of the thread deflector. bei g lwsitioned ,i'rontward' o'f'jthe thread j I clamp' to insure that the thread shall be first clamped then bent. T' 1; I 1. Ina loom, the combination of the lay device to act upon theffthread betweenffthe boxed shuttle and warp-threads comprising a Y t clamp for clamping'the thread adjacent the inner end of the boxed shuttleyanda thread and shuttleboxeaafilling-thread tensioning I deflect-or between a the clamp andfwarp threads, means normally 'eflective for maintaining the-threaddeflector and a member or the clamp in inoperative position, and means for periodically. moving the thread deflector and clamp member into operative position.

device tofact upon the thread between' the boxed shuttle and Warp threads comprising a clamp for clampingthe thread adjacent'the 12, In -a loom, the combination ofthe'lay and shuttle boxes, affilling thread tensioning inner end of the boxed shuttle, and ath riead deflector between the clamp and warp threads,

means normally eiiective for maintaining the thread deflector and a memberoftheclamp in inoperative position, 'means" for periodically: moving the thread deflector and'clamp' meni- -ber into operative position, [and means for again moving the thread deflector andfclam'p member to inoperative position after the thread has been clamped and tensioned.

13. In a loom, the'combination of the lay and shuttle boxes, a filling thread tensioning device to act upon the thread between the boxed shuttle and warp threads comprising a clamp for clamping-the thread adjacent the inner end of the boxedshuttle, and a thread tensioning device to act upon the thread be tween the boxed shuttle and Warp threads comprising a thread clamp and a thread de-' flector to form a bend or bight in the thread v between the thread clamp and warp threads,

means normally acting to maintain the clamp anddefiector inoperative, a filling feeler, and means rendered operative by the filling feeler on detection of substantial exhaustion of fill-- l ing to cause theclamp and thread deflector to become operative that the first pick offilling following replenishment may be tensioned,

I 15. In a filling replenishing loom, the combination of the lay and'shuttle boxes, a thread,

tensioning device to act upon the thread between the boxedshnttlel zind w arp threads comprising a thread clalnpanda thread deflector to form wbend or bight} in the thread between thethre d, lamp and arp'threeds,

means normally acting to maintain the clamp and deflector inoperative, a filling feeler,

means rendered operative by the I fillin g feeler on detection of snbstentlalexhaustion offillv V ingto cius'e the clan'ip and threaddeflector to r I following replenishment may be tensio'ned,

becomeoperatwe thatthe first pick of filling and means actuated, the lay'ifor returning the clamp and thread deflector to inoperative positionl' 16. Ina, fillingreplenishinglooni;theconr hinzition of the lay and shuttle boxes, a thread tensionin'g device to art upon the thread between the boxed shuttle and- W-arp threads comprising ethregtdclamp and a thread-deflecto i to fo m. 'ebe tl, bigh n he ad between thethreaclclamp' and Warp threads,

a t p device norma ly a t ng to maintain th clamp andi a d flc r mp ra I ring fe'eler to detect the conditionof the filling in the shuttle on detectingloeats, a transverse "orrock shaft actnatedon'call for replenish ment 'of filling,end means'operated by the rdcnkf hait "t ji eeflthe. clamp" z l thread eflectorfor mov'ementtp, operative position to .tensionthe first pick of filling following re pleni shnrent.

a fill-. and a thread deflector between the clamp warp rea hav ng a l op ough w c between the thread a trip devicenorinally acting to maintainthe clamp and thread deflector inoperative, a filling" feeler to detect the condition' o'f the filling in the shuttle on detecting beats, a

transyerseor rock shaft, actuated on call for replenishment of filling, means operated by the rock shaft to free the clamp and thread the con ."fiector to form a bend or bight in the thread 1 7 clampiznid walrp' threads,

deflector for movement to operative position I to tension the first pick of filling following replenishnient, and means actuated by the lay to return the clamp and threadv deflector to inoperativeposition. V I v 18, Athread tensioning device for looms,

compr s ng a c amp t c mp h threa' 'x Warp threads,-

and 1 tween the "boxed shuttle and the fillingthread is leidfby the shdttle, and inclined crossing. legs about which the clamped thread isfbent on frontwa'rd inove ment ofthe lay.

; i I s mo y whered have s gn d y ame o h ne i cation- WILLIAM B 

